Note – there is an existing post about this interesting light over here hence this post will offer to provide a few more technical details rather than attempting to be a typical photo review.
As it relates to flashlights or tactical lighting, Rosch is a relatively new name to me. However, my familiarity with and appreciation of Malkoff Devices goes back years, and I posted a review of one of Gene Malkoff’s lights here. This is my personal light and the review ‘gratis’ due to my appreciation of Malkoff products.
This is relevant because the light engine in the SL1 appears to be a version of the one in the aforementioned review, so from a standpoint of the LED light engine it should have instant credibility.
This very well made light doubles as a front sight for any weapon utilizing the Picatinny rail system. I didn’t want to remove the front sight from any of my rifles, but I did mount the light on the rail of one of my ARs and didn’t even notice the extra 3.2 ounces of weight.
Operation is simple. You’ll note a small boot on the tail cap of the light. This is NOT a ‘clicky’ switch, but rather a simple momentary press. Tightening the tail cap can activate the light, or when the light is in the off position you can simply press the tail to momentarily engage the light. This is a simple, virtually fail-proof design and it functions well.
Rosch has also developed a Surefire E series tail cap adaptor. I haven’t seen this adaptor yet, but by utilizing this adaptor you should be able to also utilize any of Surefire’s accessories (such as a pressure switch) with the SL1. For size reference here is a photo of the SL1 along side the ubiquitous Surefire E2E as well as the more current Surefire E2DL Ultra.
The light is constructed of 7075 T6 aluminum, anodized then cerakoted. My bet is that this little light can withstand being abused, and the constant recoil from the weapon should not ever be an issue.
In my homemade integrating sphere I measured 231 lumen output with the included Battery Station primary battery. I believe this to be within the margin of error of the rated 250 lumen. After all, my sphere is homemade and although it has proven to be reliable, the 250 lumen rating provided by the manufacturer is reasonable. The beam has a nice shape – a good, solid hot spot for distance lighting of a target, yet good quality spill to light the area.
The SL1 is rated for “high quality (Made in USA) CR123A” batteries only. Of note is the fact that some of the Malkoff lights that specify “primary only” can function just fine with the 3.2V LiFePO4 cell, shown here.
I tried this very battery in the SL1 and it functioned perfectly with virtually no change in output. However, since the manufacture provides detailed warnings against using anything other than primary cells, I suggest that you stick with their recommendations. Any other batteries would be used at your own risk, and you especially do NOT want to use the 3.7 lithium rechargeable cells.
The package includes the light, a battery, 1x sight adjustment tool, 1×5/32 hex key and a small tube of thread lock.
While at $235 the light is not inexpensive, for what you get I believe that it represents a solid value. You get a high quality front sight with a built in high quality light that can be used with most any Picatinny rail equipped weapon. If you have priced weapon lights as well as the various adaptors required to use them, you will know that this is a good value, and a really brilliant idea. As Steve Johnson said in his post, “This is one of those products I wish I had thought up myself!”